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Joint International Semantic Technology Conference

JIST 2018: Semantic Technology pp 136–152Cite as

SPARQ\(\lambda \): A Functional Perspective on Linked Data Services

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Part of the book series: Lecture Notes in Computer Science ((LNISA,volume 11341))

Abstract

With more and more applications providing semantic data to improve interoperability, the amount of available RDF datasets is constantly increasing. The SPARQL query language is a W3C recommendation to provide query capabilities on such RDF datasets. Data integration from different RDF sources is up to now mostly task of RDF consuming clients. However, from a functional perspective, data integration boils down to a function application that consumes input data as parameters, and based on these, produces a new set of data as output. Following this notion, we introduce SPARQ\(\lambda \), an extension to the SPARQL 1.1 query language. SPARQ\(\lambda \) enables dynamic injection of RDF datasets during evaluation of the query, and by this lifts SPARQL to a tool to write templates for RDF producing functions, an important step to reduce the effort to write SPARQL queries that work on data from various sources. SPARQ\(\lambda \) is moreover suitable to directly translate to an RDF described Web service interface, which allows to lift integration of data and re-provisioning of integrated results from clients to cloud environments, and by this solving the bottleneck of RDF data integration on client side.

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Notes

  1. 1.

    https://www.w3.org/DesignIssues/LinkedData.html.

  2. 2.

    https://www.w3.org/TR/ldp/.

  3. 3.

    https://wiki.dbpedia.org/.

  4. 4.

    https://www.w3.org/TR/2013/REC-sparql11-query-20130321/#construct.

  5. 5.

    https://www.w3.org/TR/sparql11-protocol/#query-operation.

  6. 6.

    https://github.com/apache/jena/.

  7. 7.

    https://github.com/openfaas/faas.

  8. 8.

    https://github.com/apache/jena/tree/master/jena-arq.

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Acknowledgment

This work is supported by the Federal Ministry of Education and Research of Germany in the project Hybr-iT (Förderkennzeichen 01IS16026A).

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Authors and Affiliations

  1. Saarbrücken Graduate School of Computer Science, German Research Center for Artifical Intelligence (DFKI), 66123, Saarbrücken, Germany

    Christian Vogelgesang, Torsten Spieldenner & René Schubotz

Authors
  1. Christian Vogelgesang
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  2. Torsten Spieldenner
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  3. René Schubotz
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Corresponding author

Correspondence to Christian Vogelgesang .

Editor information

Editors and Affiliations

  1. National Institute of Informatics, Tokyo, Japan

    Ryutaro Ichise

  2. Accenture Labs, Dublin, Ireland

    Freddy Lecue

  3. Japan Science and Technology Agency, Tokyo, Japan

    Takahiro Kawamura

  4. Peking University, Beijing, China

    Dongyan Zhao

  5. Imperial College London, London, UK

    Stephen Muggleton

  6. Osaka University, Osaka, Japan

    Kouji Kozaki

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Vogelgesang, C., Spieldenner, T., Schubotz, R. (2018). SPARQ\(\lambda \): A Functional Perspective on Linked Data Services. In: Ichise, R., Lecue, F., Kawamura, T., Zhao, D., Muggleton, S., Kozaki, K. (eds) Semantic Technology. JIST 2018. Lecture Notes in Computer Science(), vol 11341. Springer, Cham. https://doi.org/10.1007/978-3-030-04284-4_10

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  • DOI: https://doi.org/10.1007/978-3-030-04284-4_10

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  • Online ISBN: 978-3-030-04284-4

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